<template>
  <view>
    <!-- 自定义颜色和圆角 -->
    <!-- <my-search :bgcolor="'pink'" :radius="3"></my-search> -->
    <my-search @myClick="gotoSearch"></my-search>
    <view class="scroll-view-container">
      <!-- 左侧滑动区域 -->
      <scroll-view class="left-scroll-view" scroll-y="true" :style="{height: wh + 'px'}">
        <block v-for="(item,i) in cateList" :key="i">
          <view :class="['left-scroll-view-item', i === active? 'active' : '']" @click="activeChange(i)">{{item.cat_name}}</view>
        </block>
      </scroll-view>
      <!-- 右侧滑动区域 -->
      <scroll-view scroll-y="true" :style="{height: wh + 'px'}" :scrollTop="scrollTop">
        <view class="cate-lev2" v-for="(item2,i2) in cateLevel2" :key="i2">
          <!-- 二级分类的标题 -->
          <view class="cate-lev2-title">/ {{item2.cat_name}} /</view>
          <!-- 三级分类的列表 -->
          <view class="cate-lev3">
            <!-- 三级分类的item -->
            <view class="cate-lev3-item" v-for="(item3, i3) in item2.children" :key="i3" @click="gotoGoodsList(item3)">
              <!-- 图片 -->
              <image :src="item3.cat_icon.replace('dev', 'web')"></image>
              <!-- 图片名称 -->
              <title>{{item3.cat_name}}</title>
            </view>
          </view>
        </view>
      </scroll-view>
    </view>
  </view>
</template>

<script>
  import badgeMix from '@/mixins/tabbar-badge.js'
  export default {
    mixins: [badgeMix],
    data() {
      return {
        // 当前设备可用的高度
        wh: 0,
        cateList: [],
        active: 0,
        // 二级分类数据
        cateLevel2: [],
        scrollTop: 0
      };
    },
    onLoad() {
      const sysInfo = uni.getSystemInfoSync()
      console.log(sysInfo)
      this.wh = sysInfo.windowHeight
      
      this.getCateList()
    },
    methods: {
      async getCateList() {
        const {data: res} = await uni.$http.get('/api/public/v1/categories')
        console.log(res,'分页数据')
        if (res.meta.status !== 200) return uni.$showMsg()
        this.cateList = res.message
        // 获取二级分类数据
        this.cateLevel2 = res.message[0].children
      },
      activeChange(i) {
        this.active = i
        this.cateLevel2 = this.cateList[i].children
        console.log(this.cateLevel2)
        this.scrollTop = this.scrollTop === 0 ? 0.1 : 0 
      },
      gotoGoodsList(item) {
        uni.navigateTo({
          url:'/subpkg/goods_list/goods_list?cid=' + item.cat_id
        })
      },
      gotoSearch() {
        uni.navigateTo({
          url:'/subpkg/search/search'
        })
      }
    }
  }
</script>

<style lang="scss">
.scroll-view-container {
  display: flex;
  .left-scroll-view {
    width: 120px;
    .left-scroll-view-item {
      background-color: #F7F7F7;
      text-align: center;
      font-size: 12px;
      line-height: 60px;
      &.active {
        background-color: #FFF;
        border-left: 3px solid deeppink;
      }
    }
  }
  .cate-lev2-title {
    text-align: center;
    font-size: 12px;
    font-weight: 900;
    padding: 15px 0;
  }
  .cate-lev3 {
    display: flex;
    flex-wrap: wrap;
    .cate-lev3-item {
      width: 33.33%;
      display: flex;
      flex-direction: column;
      justify-content: center;
      align-items: center;
      margin-bottom: 10px;
      image {
        width: 60px;
        height: 60px;
      }
      title {
        font-size: 12px
      }
    }
  }
}
</style>
